Pipe connection



Sept. 25, 1945. J. SLEZAK PIPE CONNECTION Original Filed Aug 5, 1942Patented Sept. 25, 1945' PIPE CONNECTION John Slezak, Sycamore, Ill.,assignor to "Turner Brass Works, Sycamore, Ill., a corporation ofIllinois Original application August 3, 1942, Serial No. 453,333, nowPatent No. 2,349,202, dated May 16, 1944. Divided and'this applicationMarch 30, 1944. Serial No. 528,675

4Claims.

This invention relates to plumbing fixtures and similar pipe connectionsand is shown as a part a sink or original diameter for telescopicallyreceiving the other member and with the extreme end portion of theexpanded member'curled inwardly in the form of a reinforcing bead withthreads on its external surface to receive a sealing gland.

Other objects and advantages of the invention will appear from thefollowing description taken 1 in connection with the drawing, in which:

Fig. 1 is an elevational view taken partially in section at an axialplane of the fitting, and showing the structure embodying thisinvention.

Fig. 2 is a top plan view of the fitting.

Fig. 3 is a transverse section, taken as indicated at line 3-3 on F18.1.

While I have shown in the drawing and shall herein describe in detail apreferred form of my invention, it is to be understood that I do notintend to limit the invention to the specific form or applicationdisclosed, but aim to cover all modifications and alternativeconstructions falling within the scope of the invention as expressed inthe claims.

' This application is a division of my application ,upper edge of thebowl. The drain outlet in the bottom of the bowl includes a countersunkmarginal portion C into which the metallic tubular outlet pipe issecured.

The drawing also shows a fitting constructed from a length of straight,metallic tubing and packing member 21.

comprising a smooth, cylindrical portion in which is adapted totelescope with the adjacent ,fitting--ordinarily a U-shaped trap membershown at Ii. At the upper end, the member I0 is flared to form a flange12 which seats in the countersunk surface C of the lavatory bowl. Anintermediate portion l3 of the tube I0 is expanded slightly beyond itsoriginal diameter and the flange l2. The portion of the member in im--,

mediately below the flange i2 is provided with one or more ports 11communicating with an annular passage E in the bowl which connects withthe overflow passage B. Just below the outlets l1 a strainer disk asindicated at l8, having a peripheral flange i9 which holds itfrictionally in position, is lodged against the inwardly pressed bosses20 which are formed in the metallic wall of the member iii.

The clamping nut i5, as shown, is made of sheet metal comprising atransaxial web portion 21 with an annular, inner flange 22 internallythreaded to fit the threads ll of the fitting. A peripheral flange 23 isof non-circular outline, providing six flat faces 24 serving as the flatsides of a hexagon nut for the convenient application of a wrench intightening the nut Ii against the sealing washer it.

The U-shaped trap member ll shown in connection with the fitting i0 isalso of thin, metal tubing, and its upper portion is expanded at 2! toprovide clearance for telescopic engagement with the member ill. Theupper edge of the part 28 is curled inwardly as seen at 26, providing anupwardly facing lodgement surface for a sealing washer 21. As shown, theextreme upper portion of the trap member is slightly expanded beyond thediameter of the part 25, and is externally threaded at 28 to receive thethreaded flange 29 of the cup-shaped nut or gland 30 which confines andencloses the sealing washer or Similarly, at its opposite end the U-tubeIi is formed with an expanded terminal portion 3i externally threaded toreceive a packing nut 32 and internally curled or beaded at 33. Inaddition to providing seating area for packing washers, such as thatshown at 21, the inwardly curled or beaded portions 26 and 33 formreinforcing channels which materially stiffen the threaded terminalportions of the U-tube. It will be understood that the terminal portion3| is designed for telescopic engagement with an additional tubularmember not shown; and it will also be'understood that the expanded andinwardly curled terminal portions of the member 1 I may be similarlyformed on one or both ends of a straight tube or pipe for cooperationwith a telescopically engaged tube sectionwherever such adjustableconnections are desirable, the U-tube ll being chosen merely as aconvenient illustration and embodiment of this type of connection.

I claim as my invention:

1. In a pipe connection a unitary, tubular member of relatively thinstock, a portion of said member adjacent one end being expanded beyondthe original diameter of'the tubing and having threads formed directlyin its external surface, and the extreme end portion of the member beingcurled inwardly in the form of a reinforcing bead.

2. In a pipe connection a tubular member having a straight'cylindricalportion and a second member telescopically engaged therewith, a portionof said second member adjacent one end being expanded beyond theoriginal diameter of the tubing and the extreme end portion of theexpanded part being curled inwardly in the form enemas or a reinforcingbead with an internal diameter dimensioned to receive the straightportion of the first-mentioned member. the external surface of the beadhaving threads formed directly therein and a threaded gland securedthereon with packing material clamped between the end surface of thebead and the gland in sealing engagement with the first-mentionedmember.

3. In a pipe connection a member of thin walled tubing having a straightcylindrical portion at one end and a second tubular member of relativelythin stock having a portion adjacent one end expanded beyond theoriginal diameter of the tubing and telescopically engaged with saidstraight cylindrical portion of the first memher, the terminal portionof the second member being bent inwardly and the adjacent externalsurface thereof being threaded, a packing washer seated against saidinwardly bent terminal and engaging the cylindrical wall of the firstmember and a cupped gland nut enclosing said packing washer and engagedwith the threads of said second member.

4. A fitting of thin tubular stock having a portion of its wall adjacentthe end doubled over upon itself and externally threaded.

' JOHN SLEZAK.

